To find files which last modified date is after 09/20/2012:
forfiles /s /m *.* /d 09/20/2012 /c "cmd /c echo @PATH @FDATE is new"
To find files which last modified date is before 09/20/2012:
forfiles /s /m *.* /d -09/20/2012 /c "cmd /c echo @PATH @FDATE is new"
To list all of the batch files on drive C:
forfiles /p c:\ /s /m *.bat /c "cmd /c echo @file is a batch file"
To list all of the directories on drive C
forfiles /p c:\ /s /m *.* /c "cmd /c if @isdir==true echo @file is a directory"
To list all of the files in the current directory that are at least one year old
forfiles /s /m *.* /d -365 /c "cmd /c echo @file is at least one year old."
To list the file name extensions of all the files in the current directory in column format, and add a tab before the extension
forfiles /s /m *.* /c "cmd /c echo The extension of @file is 0x09@ext"
Friday, 30 November 2012
Tuesday, 27 November 2012
C# Regular Expressions Cheat Sheet
Character |
Description |
|---|---|
| \ | Marks the next character as either a special character or escapes a literal. For example, "n" matches the character "n". "\n" matches a newline character. The sequence "\\" matches "\" and "\(" matches "(". Note: double quotes may be escaped by doubling them: "<a href=""...>" |
| ^ | Depending on whether the MultiLine option is set, matches the position before the first character in a line, or the first character in the string. |
| $ | Depending on whether the MultiLine option is set, matches the position after the last character in a line, or the last character in the string. |
| * | Matches the preceding character zero or more times. For example, "zo*" matches either "z" or "zoo". |
| + | Matches the preceding character one or more times. For example, "zo+" matches "zoo" but not "z". |
| ? | Matches the preceding character zero or one time. For example, "a?ve?" matches the "ve" in "never". |
| . | Matches any single character except a newline character. |
| (pattern) | Matches pattern and remembers the match. The matched substring can be retrieved from the resulting Matches collection, using Item [0]...[n]. To match parentheses characters ( ), use "\(" or "\)". |
| (?<name>pattern) | Matches pattern and gives the match a name. |
| (?:pattern) | A non-capturing group |
| (?=...) | A positive lookahead |
| (?!...) | A negative lookahead |
| (?<=...) | A positive lookbehind . |
| (?<!...) | A negative lookbehind . |
| x|y | Matches either x or y. For example, "z|wood" matches "z" or "wood". "(z|w)oo" matches "zoo" or "wood". |
| {n} | n is a non-negative integer. Matches exactly n times. For example, "o{2}" does not match the "o" in "Bob," but matches the first two o's in "foooood". |
| {n,} | n is a non-negative integer. Matches at least n times. For example, "o{2,}" does not match the "o" in "Bob" and matches all the o's in "foooood." "o{1,}" is equivalent to "o+". "o{0,}" is equivalent to "o*". |
| {n,m} | m and n are non-negative integers. Matches at least n and at most m times. For example, "o{1,3}" matches the first three o's in "fooooood." "o{0,1}" is equivalent to "o?". |
| [xyz] | A character set. Matches any one of the enclosed characters. For example, "[abc]" matches the "a" in "plain". |
| [^xyz] | A negative character set. Matches any character not enclosed. For example, "[^abc]" matches the "p" in "plain". |
| [a-z] | A range of characters. Matches any character in the specified range. For example, "[a-z]" matches any lowercase alphabetic character in the range "a" through "z". |
| [^m-z] | A negative range characters. Matches any character not in the specified range. For example, "[m-z]" matches any character not in the range "m" through "z". |
| \b | Matches a word boundary, that is, the position between a word and a space. For example, "er\b" matches the "er" in "never" but not the "er" in "verb". |
| \B | Matches a non-word boundary. "ea*r\B" matches the "ear" in "never early". |
| \d | Matches a digit character. Equivalent to [0-9]. |
| \D | Matches a non-digit character. Equivalent to [^0-9]. |
| \f | Matches a form-feed character. |
| \k | A back-reference to a named group. |
| \n | Matches a newline character. |
| \r | Matches a carriage return character. |
| \s | Matches any white space including space, tab, form-feed, etc. Equivalent to "[ \f\n\r\t\v]". |
| \S | Matches any nonwhite space character. Equivalent to "[^ \f\n\r\t\v]". |
| \t | Matches a tab character. |
| \v | Matches a vertical tab character. |
| \w | Matches any word character including underscore. Equivalent to "[A-Za-z0-9_]". |
| \W | Matches any non-word character. Equivalent to "[^A-Za-z0-9_]". |
| \num | Matches num, where num is a positive integer. A reference back to remembered matches. For example, "(.)\1" matches two consecutive identical characters. |
| \n | Matches n, where n is an octal escape value. Octal escape values must be 1, 2, or 3 digits long. For example, "\11" and "\011" both match a tab character. "\0011" is the equivalent of "\001" & "1". Octal escape values must not exceed 256. If they do, only the first two digits comprise the expression. Allows ASCII codes to be used in regular expressions. |
| \xn | Matches n, where n is a hexadecimal escape value. Hexadecimal escape values must be exactly two digits long. For example, "\x41" matches "A". "\x041" is equivalent to "\x04" & "1". Allows ASCII codes to be used in regular expressions. |
| \un | Matches a Unicode character expressed in hexadecimal notation with exactly four numeric digits. "\u0200" matches a space character. |
| \A | Matches the position before the first character in a string. Not affected by the MultiLine setting |
| \Z | Matches the position after the last character of a string. Not affected by the MultiLine setting. |
| \G | Specifies that the matches must be consecutive, without any intervening non-matching characters. |
Tuesday, 20 November 2012
Validation Regex Repository
<?xml version="1.0"?>
<regex>
<name>url</name>
<pattern><![CDATA[^((((https?|ftps?|gopher|telnet|nntp)://)|(mailto:|news:))(%[0-9A-Fa-f]{2}|[-()_.!~*';/?:@&=+$,A-Za-z0-9])+)([).!';/?:,][[:blank:]])?$]]></pattern>
<description>A valid URL per the URL spec.</description>
</regex>
<regex>
<name>IP</name>
<pattern><![CDATA[^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$]]></pattern>
<description>A valid IP Address</description>
</regex>
<regex>
<name>e-mail</name>
<pattern><![CDATA[^[a-zA-Z0-9+&*-]+(?:\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,7}$]]></pattern>
<description>A valid e-mail address</description>
</regex>
<regex>
<name>safetext</name>
<pattern><![CDATA[^[a-zA-Z0-9 .-]+$]]></pattern>
<description>Lower and upper case letters and all digits</description>
</regex>
<regex>
<name>date</name>
<pattern><![CDATA[^(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$]]></pattern>
<description>Date in US format with support for leap years</description>
</regex>
<regex>
<name>creditcard</name>
<pattern><![CDATA[^((4\d{3})|(5[1-5]\d{2})|(6011)|(7\d{3}))-?\d{4}-?\d{4}-?\d{4}|3[4,7]\d{13}$]]></pattern>
<description>A valid credit card number</description>
</regex>
<regex>
<name>password</name>
<pattern><![CDATA[^(?=.*\d)(?=.*[a-z])(?=.*[A-Z]).{4,8}$]]></pattern>
<description>4 to 8 character password requiring numbers and both lowercase and uppercase letters</description>
</regex>
<regex>
<name>English_digitwords</name>
<pattern><![CDATA[^(zero|one|two|three|four|five|six|seven|eight|nine)$]]></pattern>
<description>The English words representing the digits 0 to 9</description>
</regex>
<regex>
<name>English_daywords</name>
<pattern><![CDATA[^(Mo|Tu|We|Th|Fr|Sa|Su)$]]></pattern>
<description>English 2 character abbreviations for the days of the week</description>
</regex>
<regex>
<name>English_monthwords</name>
<pattern><![CDATA[^(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)$]]></pattern>
<description>English 3 character abbreviations for the months</description>
</regex>
<regex>
<name>French_digitwords</name>
<pattern><![CDATA[^(z[eé]ro|un|deux|trois|quatre|cinq|six|sept|huit|neuf)$]]></pattern>
<description>The French words representing the digits 0 to 9</description>
</regex>
<regex>
<name>German_digitwords</name>
<pattern><![CDATA[^(null|eins|zwei|drei|vier|f(ue|ü)nf|sechs|sieben|acht|neun)$]]></pattern>
<description>The German words representing the digits 0 to 9</description>
</regex>
<regex>
<name>Spanish_digitwords</name>
<pattern><![CDATA[^(cero|uno|dos|tres|cuatro|cinco|seis|siete|ocho|nueve)$]]></pattern>
<description>The Spanish words representing the digits 0 to 9</description>
</regex>
<regex>
<name>US_zip</name>
<pattern><![CDATA[^\d{5}(-\d{4})?$]]></pattern>
<description>US zip code with optional dash-four</description>
</regex>
<regex>
<name>US_phone</name>
<pattern><![CDATA[^\D?(\d{3})\D?\D?(\d{3})\D?(\d{4})$]]></pattern>
<description>US phone number with or without dashes</description>
</regex>
<regex>
<name>US_state</name>
<pattern><![CDATA[^(AE|AL|AK|AP|AS|AZ|AR|CA|CO|CT|DE|DC|FM|FL|GA|GU|HI|ID|IL|IN|IA|KS|KY|LA|ME|MH|MD|MA|MI|MN|MS|MO|MP|MT|NE|NV|NH|NJ|NM|NY|NC|ND|OH|OK|OR|PW|PA|PR|RI|SC|SD|TN|TX|UT|VT|VI|VA|WA|WV|WI|WY)$]]></pattern>
<description>2 letter U.S. state abbreviations</description>
</regex>
<regex>
<name>US_ssn</name>
<pattern><![CDATA[^\d{3}-\d{2}-\d{4}$]]></pattern>
<description>9 digit U.S. social security number with dashes</description>
</regex>
<!-- Some additional examples that have not been vetted
// HTML HEX CODE ^#?([a-f]|[A-F]|[0-9]){3}(([a-f]|[A-F]|[0-9]){3})?$
// FLOATING POINT ^[-+]?[0-9]+[.]?[0-9]*([eE][-+]?[0-9]+)?$
// PERSON NAME ^[a-zA-Z]+(([',. -][a-zA-Z ])?[a-zA-Z]*)*$
// MAC ADDRESS ^([0-9a-fA-F][0-9a-fA-F]:){5}([0-9a-fA-F][0-9a-fA-F])$
// GUID ^[A-Z0-9]{8}-[A-Z0-9]{4}-[A-Z0-9]{4}-[A-Z0-9]{4}-[A-Z0-9]{12}$
// IP ADDRESS ^\b((25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)\.){3}(25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)\b$
// IP ADDRESS (^\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b$
// REASONABLE DOMAIN NAME ^([a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,6}$
// RFC 1918 NON ROUTABLE IP ^(((25[0-5]|2[0-4][0-9]|19[0-1]|19[3-9]|18[0-9]|17[0-1]|17[3-9]|1[0-6][0-9]|1[1-9]|[2-9][0-9]|[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9]))|(192\.(25[0-5]|2[0-4][0-9]|16[0-7]|169|1[0-5][0-9]|1[7-9][0-9]|[1-9][0-9]|[0-9]))|(172\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|1[0-5]|3[2-9]|[4-9][0-9]|[0-9])))\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])$
// VALID WINDOWS FILENAME ^(?!^(PRN|AUX|CLOCK\$|NUL|CON|COM\d|LPT\d|\..*)(\..+)?$)[^\x00-\x1f\\?*:\";|/]+$
// Java Classname ^(([a-z])+.)+[A-Z]([a-z])+$
// ANY PLATFORM FILENAME ^(([a-zA-Z]:|\\)\\)?(((\.)|(\.\.)|([^\\/:*?"|<>. ](([^\\/:*?"|<>. ])|([^\\/:*?"|<>]*[^\\/:*?"|<>. ]))?))\\)*[^\\/:*?"|<>. ](([^\\/:*?"|<>. ])|([^\\/:*?"|<>]*[^\\/:*?"|<>. ]))?$
-->
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